void Projectile::Run(float elapsed_time)
{
if (HasReachedDestination())
{
float factor, attenuation;
time_left -= elapsed_time;
factor = time_left / timeout;
attenuation = base_attenuation / factor;
SetAttenuation(0, 0, (attenuation < 0 ? 1000 : attenuation));
}
else
{
LPoint3f objective = target.get_pos(node_path.get_parent());
LPoint3f position = node_path.get_pos();
LPoint3f distance = position - objective;
float max_distance = max(max(abs((long)distance.get_x()), abs((long)distance.get_y())), abs((long)distance.get_z()));
LPoint3f movement;
if (max_distance <= speed)
{
node_path.set_pos(objective);
node_path.hide();
HitsTarget.Emit();
}
else
{
movement.set_x(-(speed * (distance.get_x() / max_distance)));
movement.set_y(-(speed * (distance.get_y() / max_distance)));
movement.set_z(-(speed * (distance.get_z() / max_distance)));
node_path.set_pos(node_path.get_pos() + movement);
}
}
}
void SceneCamera::CenterCameraOn(NodePath np)
{
if (_useTrackball)
_window->center_trackball(np);
else
{
_centeringCamera = true;
_objectivePos = np.get_pos(_window->get_render());
_objectivePos.set_z(_objectivePos.get_z() + _camera_height);
LPoint3f cameraRot = _camera.get_hpr();
float rad2deg = 3.1415926535897 / 180;
cameraRot.set_x(cameraRot.get_x() * rad2deg);
cameraRot.set_y(cameraRot.get_y() * rad2deg);
cameraRot.set_z(cameraRot.get_z() * rad2deg);
_objectivePos.set_x(np.get_x() + sin(cameraRot.get_x()) * 100);
_objectivePos.set_y(np.get_y() + tan(cameraRot.get_y()) * 100);
if (_currentCameraAngle == 1)
_objectivePos.set_y(_objectivePos.get_y() + 80 + (140 - _camera_height) / 1.35);
else
{
_objectivePos.set_x(_objectivePos.get_x() + 25 - (_camera_height - 50) * 0.85);
_objectivePos.set_y(_objectivePos.get_y() + 40 - (_camera_height - 50) * 1);
}
}
}
WaypointGenerator::WaypointGenerator(World* world, MapObject* object, LPoint4 margin, LPoint2 spacing, bool corner_origin) : world(world), object(object)
{
LPoint3f size = NodePathSize(object->render);
spacingx = spacing.get_x();
spacingy = spacing.get_y();
sizex = (size.get_x() - (margin.get_x() + margin.get_z())) / spacingx + 1;
sizey = (size.get_y() - (margin.get_y() + margin.get_w())) / spacingy + 1;
if (corner_origin)
{
initPosX = -(margin.get_x() - size.get_x());
initPosY = -(margin.get_y() - size.get_y());
spacingx = -spacingx;
spacingy = -spacingy;
}
else
{
initPosX = margin.get_x() - (size.get_x() / 2);
initPosY = margin.get_y() - (size.get_y() / 2);
}
if (!(object->collider.node.is_empty()))
{
LPoint3f collision_node_pos = object->collider.node.get_pos();
initPosX -= collision_node_pos.get_x();
initPosY -= collision_node_pos.get_y();
}
initPosZ = size.get_z() + 50.f;
}
// This function handles the collision between the ball and a wall
void World::wall_collide_handler(const CollisionEntry& colEntry)
{
// First we calculate some numbers we need to do a reflection
NodePath renderNp = m_windowFrameworkPtr->get_render();
// The normal of the wall
LVector3f norm = colEntry.get_surface_normal(renderNp) * -1;
// The current speed
float curSpeed = m_ballV.length();
// The direction of travel
LVector3f inVec = m_ballV / curSpeed;
// Angle of incidence
float velAngle = norm.dot(inVec);
LPoint3f hitDir = colEntry.get_surface_point(renderNp) - m_ballRootNp.get_pos();
hitDir.normalize();
// The angle between the ball and the normal
float hitAngle = norm.dot(hitDir);
// Ignore the collision if the ball is either moving away from the wall
// already (so that we don't accidentally send it back into the wall)
// and ignore it if the collision isn't dead-on (to avoid getting caught on
// corners)
if(velAngle > 0 && hitAngle > .995)
{
// Standard reflection equation
LVector3f reflectVec = (norm * norm.dot(inVec * -1) * 2) + inVec;
// This makes the velocity half of what it was if the hit was dead-on
// and nearly exactly what it was if this is a glancing blow
m_ballV = reflectVec * (curSpeed * (((1-velAngle)*.5)+.5));
// Since we have a collision, the ball is already a little bit buried in
// the wall. This calculates a vector needed to move it so that it is
// exactly touching the wall
LPoint3f disp = (colEntry.get_surface_point(renderNp) -
colEntry.get_interior_point(renderNp));
LPoint3f newPos = m_ballRootNp.get_pos() + disp;
m_ballRootNp.set_pos(newPos);
}
}
// Accepts arrow keys to move either the player or the menu cursor,
// Also deals with grid checking and collision detection
void World::move()
{
// If the camera-left key is pressed, move camera left.
// If the camera-right key is pressed, move camera right.
NodePath cameraNp = m_windowFrameworkPtr->get_camera_group();
cameraNp.look_at(m_ralph);
if(m_keyMap[K_cam_left] != false)
{
cameraNp.set_x(cameraNp, -20 * ClockObject::get_global_clock()->get_dt());
}
if(m_keyMap[K_cam_right] != false)
{
cameraNp.set_x(cameraNp, +20 * ClockObject::get_global_clock()->get_dt());
}
// save ralph's initial position so that we can restore it,
// in case he falls off the map or runs into something.
LPoint3f startPos = m_ralph.get_pos();
// If a move-key is pressed, move ralph in the specified direction.
if(m_keyMap[K_left])
{
m_ralph.set_h(m_ralph.get_h() + 300 * ClockObject::get_global_clock()->get_dt());
}
if(m_keyMap[K_right])
{
m_ralph.set_h(m_ralph.get_h() - 300 * ClockObject::get_global_clock()->get_dt());
}
if(m_keyMap[K_forward])
{
m_ralph.set_y(m_ralph, -25 * ClockObject::get_global_clock()->get_dt());
}
// If ralph is moving, loop the run animation.
// If he is standing still, stop the animation.
if(m_keyMap[K_forward] || m_keyMap[K_left] || m_keyMap[K_right])
{
if(!m_isMoving)
{
m_ralph.loop("run", true);
m_isMoving = true;
}
}
else
{
if(m_isMoving)
{
m_ralph.stop("run");
m_ralph.pose("walk", 5);
m_isMoving = false;
}
}
// If the camera is too far from ralph, move it closer.
// If the camera is too close to ralph, move it farther.
LPoint3f camVec = m_ralph.get_pos() - cameraNp.get_pos();
camVec.set_z(0);
float camDist = camVec.length();
camVec.normalize();
if(camDist > 10.0)
{
cameraNp.set_pos(cameraNp.get_pos() + camVec*(camDist-10));
camDist = 10.0;
}
if(camDist < 5.0)
{
cameraNp.set_pos(cameraNp.get_pos() - camVec*(5-camDist));
camDist = 5.0;
}
// Now check for collisions.
NodePath renderNp = m_windowFrameworkPtr->get_render();
m_collisionTraverser.traverse(renderNp);
// Adjust ralph's Z coordinate. If ralph's ray hit terrain,
// update his Z. If it hit anything else, or didn't hit anything, put
// him back where he was last frame.
m_ralphGroundHandlerPtr->sort_entries();
if(m_ralphGroundHandlerPtr->get_num_entries() > 0 &&
m_ralphGroundHandlerPtr->get_entry(0)->get_into_node()->get_name() == "terrain")
{
m_ralph.set_z(m_ralphGroundHandlerPtr->get_entry(0)->get_surface_point(renderNp).get_z());
}
else
{
m_ralph.set_pos(startPos);
}
// Keep the camera at one foot above the terrain,
// or two feet above ralph, whichever is greater.
m_camGroundHandlerPtr->sort_entries();
if(m_camGroundHandlerPtr->get_num_entries() > 0 &&
m_camGroundHandlerPtr->get_entry(0)->get_into_node()->get_name() == "terrain")
{
cameraNp.set_z(m_camGroundHandlerPtr->get_entry(0)->get_surface_point(renderNp).get_z()+1.0);
}
if(cameraNp.get_z() < m_ralph.get_z() + 2.0)
{
cameraNp.set_z(m_ralph.get_z() + 2.0);
}
// The camera should look in ralph's direction,
// but it should also try to stay horizontal, so look at
// a floater which hovers above ralph's head.
m_floaterNp.set_pos(m_ralph.get_pos());
m_floaterNp.set_z(m_ralph.get_z() + 2.0);
cameraNp.look_at(m_floaterNp);
}
static float ZoneHeuristic(BoundingZone first, BoundingZone second)
{
LPoint3f size = (first + second).size;
return (size.get_x() * size.get_y());
}
// If the ball hits a hole trigger, then it should fall in the hole.
// This is faked rather than dealing with the actual physics of it.
void World::lose_game(const CollisionEntry& entry)
{
// The triggers are set up so that the center of the ball should move to the
// collision point to be in the hole
NodePath renderNp = m_windowFrameworkPtr->get_render();
LPoint3f toPos = entry.get_interior_point(renderNp);
// Stop the maze task
PT(GenericAsyncTask) rollTaskPtr = DCAST(GenericAsyncTask, AsyncTaskManager::get_global_ptr()->find_task("rollTask"));
if(rollTaskPtr != NULL)
{
AsyncTaskManager::get_global_ptr()->remove(rollTaskPtr);
}
// Move the ball into the hole over a short sequence of time. Then wait a
// second and call start to reset the game
// Note: Sequence is a python only class. We have to manage using CMetaInterval for the animation
// with a callback event when the animation is done to callback on World::start() to restart the game.
PT(CLerpNodePathInterval) lerp1Ptr = new CLerpNodePathInterval("lerp1",
0.1,
CLerpInterval::BT_no_blend,
true,
false,
m_ballRootNp,
NodePath());
PT(CLerpNodePathInterval) lerp2Ptr = new CLerpNodePathInterval("lerp2",
0.1,
CLerpInterval::BT_no_blend,
true,
false,
m_ballRootNp,
NodePath());
PT(WaitInterval) waitPtr = new WaitInterval(1);
PT(CMetaInterval) cMetaIntervalPtr = new CMetaInterval("sequence");
if(lerp1Ptr == NULL ||
lerp2Ptr == NULL ||
waitPtr == NULL ||
cMetaIntervalPtr == NULL)
{
nout << "ERROR: out of memory" << endl;
return;
}
float endPosZ = m_ballRootNp.get_pos().get_z() - 0.9;
LVecBase3f midEndPos(toPos.get_x(),
toPos.get_y(),
0.5*(m_ballRootNp.get_pos().get_z()+endPosZ));
lerp1Ptr->set_end_pos(midEndPos);
LVecBase3f endPos(toPos.get_x(),
toPos.get_y(),
endPosZ);
lerp2Ptr->set_end_pos(endPos);
cMetaIntervalPtr->add_c_interval(lerp1Ptr, 0, CMetaInterval::RS_previous_end);
cMetaIntervalPtr->add_c_interval(lerp2Ptr, 0, CMetaInterval::RS_previous_end);
cMetaIntervalPtr->add_c_interval(waitPtr , 0, CMetaInterval::RS_previous_end);
cMetaIntervalPtr->set_done_event("restartGame");
cMetaIntervalPtr->start();
EventHandler::get_global_event_handler()->add_hook("restartGame", call_start, this);
PT(GenericAsyncTask) intervalManagerTaskPtr = DCAST(GenericAsyncTask, AsyncTaskManager::get_global_ptr()->find_task("intervalManagerTask"));
if(intervalManagerTaskPtr == NULL)
{
intervalManagerTaskPtr = new GenericAsyncTask("intervalManagerTask", step_interval_manager, NULL);
if(intervalManagerTaskPtr != NULL)
{
AsyncTaskManager::get_global_ptr()->add(intervalManagerTaskPtr);
}
}
}
void SceneCamera::RunFollow(float elapsedTime)
{
if (_followingNodePath)
CenterCameraOn(_toFollow);
LPoint3f camVec = _objectivePos - _camera.get_pos();
LPoint3f camSpeed;
camSpeed = camVec / 2;
if (camSpeed.get_x() > 0 && camSpeed.get_x() < _cameraMovementSpeed)
camSpeed.set_x(_cameraMovementSpeed);
else if (camSpeed.get_x() < 0 && camSpeed.get_x() > -_cameraMovementSpeed)
camSpeed.set_x(-_cameraMovementSpeed);
if (camSpeed.get_y() > 0 && camSpeed.get_y() < _cameraMovementSpeed)
camSpeed.set_y(_cameraMovementSpeed);
else if (camSpeed.get_y() < 0 && camSpeed.get_y() > -_cameraMovementSpeed)
camSpeed.set_y(-_cameraMovementSpeed);
if (camSpeed.get_z() > 0 && camSpeed.get_z() < _cameraMovementSpeed)
camSpeed.set_z(_cameraMovementSpeed);
else if (camSpeed.get_z() < 0 && camSpeed.get_z() > -_cameraMovementSpeed)
camSpeed.set_z(-_cameraMovementSpeed);
camSpeed = camSpeed * elapsedTime;
LPoint3f dest = _camera.get_pos() + (camSpeed);
LPoint3f dist = _objectivePos - dest;
if (ABS(dist.get_x()) < ABS(camSpeed.get_x()))
dest.set_x(_objectivePos.get_x());
if (ABS(dist.get_y()) < ABS(camSpeed.get_y()))
dest.set_y(_objectivePos.get_y());
if (ABS(dist.get_z()) < ABS(camSpeed.get_z()))
dest.set_z(_objectivePos.get_z());
_camera.set_pos(dest);
#ifndef GAME_EDITOR
CameraMoved.Emit();
#endif
if (dest == _objectivePos)
_centeringCamera = false;
}
/*
* Camera/NodePath centering and following stuff
*/
void SceneCamera::CenterCameraInstant(LPoint3f pos)
{
_cameraPos = pos;
LPoint3f cameraRot = _camera.get_hpr();
float rad2deg = 3.1415926535897 / 180;
cameraRot.set_x(cameraRot.get_x() * rad2deg);
cameraRot.set_y(cameraRot.get_y() * rad2deg);
cameraRot.set_z(cameraRot.get_z() * rad2deg);
_camera.set_x(pos.get_x() + sin(cameraRot.get_x()) * 100);
_camera.set_y(pos.get_y() + sin(cameraRot.get_y()) * 100);
if (_currentCameraAngle == 1)
_camera.set_y(_camera.get_y() + 80 + (140 - _camera_height) / 1.35);
else
{
_camera.set_x(_camera.get_x() + 25 - (_camera_height - 50) * 0.85);
_camera.set_y(_camera.get_y() + 40 - (_camera_height - 50) * 1);
}
#ifndef GAME_EDITOR
CameraMoved.Emit();
#endif
}
void SceneCamera::RunScroll(float elapsedTime)
{
if (_window->get_graphics_window() == 0)
return ;
MouseData pointer = _graphicWindow->get_pointer(0);
unsigned char cameraMotion = MotionNone;
float _mouseBorderMargin = 40;
float cameraSpeedX = _cameraMovementSpeed;
float cameraSpeedY = _cameraMovementSpeed;
float cameraMovementX;
float cameraMovementY;
LPoint3f movement;
LPoint3f cameraRot = _camera.get_hpr();
float rad2deg = 3.1415926535897 / 180;
if (pointer.get_y() <= _mouseBorderMargin)
{
cameraMotion |= MotionTop;
cameraSpeedY = cameraSpeedY * ((_mouseBorderMargin - pointer.get_y()) / _mouseBorderMargin);
}
else if (pointer.get_y() >= _graphicWindow->get_y_size() - _mouseBorderMargin)
{
cameraMotion |= MotionBottom;
cameraSpeedY = cameraSpeedY * ((pointer.get_y() - (_graphicWindow->get_y_size() - _mouseBorderMargin)) / _mouseBorderMargin);
}
if (pointer.get_x() <= _mouseBorderMargin)
{
cameraMotion |= MotionLeft;
cameraSpeedX = cameraSpeedX * ((_mouseBorderMargin - pointer.get_x()) / _mouseBorderMargin);
}
else if (pointer.get_x() >= _graphicWindow->get_x_size() - _mouseBorderMargin)
{
cameraMotion |= MotionRight;
cameraSpeedX = cameraSpeedX * ((pointer.get_x() - (_graphicWindow->get_x_size() - _mouseBorderMargin)) / _mouseBorderMargin);
}
cameraMovementX = cameraSpeedX * elapsedTime;
cameraMovementY = cameraSpeedY * elapsedTime;
cameraRot.set_x(cameraRot.get_x() * rad2deg);
cameraRot.set_y(cameraRot.get_y() * rad2deg);
cameraRot.set_z(cameraRot.get_z() * rad2deg);
// Horizontal movement
{
movement.set_y(sin(cameraRot.get_x()));
movement.set_x(cos(cameraRot.get_x()));
if (cameraMotion & MotionLeft)
movement *= -cameraMovementX;
else if (cameraMotion & MotionRight)
movement *= cameraMovementX;
else
movement *= 0;
movement.set_z(0);
_camera.set_pos(_camera.get_pos() + movement);
}
// Vertical movement
{
movement.set_x(tan(cameraRot.get_x()));
movement.set_y(tan(cameraRot.get_y()));
if (cameraMotion & MotionTop)
movement *= -cameraMovementY;
else if (cameraMotion & MotionBottom)
movement *= cameraMovementY;
else
movement *= 0;
movement.set_z(0);
_camera.set_pos(_camera.get_pos() + movement);
}
if (_maxPosX != 0 || _minPosX != 0 || _maxPosY != 0 || _minPosY != 0)
{
if (_camera.get_x() > _maxPosX) { _camera.set_x(_maxPosX); }
else if (_camera.get_x() < _minPosX) { _camera.set_x(_minPosX); }
if (_camera.get_y() > _maxPosY) { _camera.set_y(_maxPosY); }
else if (_camera.get_y() < _minPosY) { _camera.set_y(_minPosY); }
}
#ifndef GAME_EDITOR
CameraMoved.Emit();
#endif
}
